{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["entity destination", "instrument agency", "member collection", "component whole"], "input": "the freeze-dried dura mater was placed into warm sterile saline for 20 minutes before grafting ."}
{"entity destination": [{"subject": "mater", "object": "saline"}], "instrument agency": [], "member collection": [], "component whole": []}